Hello, My question May seem easy for you as I am only begginner in using Final Cut Pro though I am struggling. I have recorded my videos through to a Iphone 10 (4K). After combining videos with effect audios and subtittles, I do export within 4k and whatever the size of resolution chosen ( - the final m4v version of the project being sent to my Iphone - it does not appear in full on the screen of my phone (the video window is too small, being only a Little square while I would like it to be bigger). This is a Problem as it diminuate the impact of video (less visibility - yet my Target viewers are Android users). Would anyone please be able to give me tips on how to increase the dimension of the video on screen? (I have Learned how to do effects but zooms are not what I am after). Many thanks, Kind Regards, Peo

I guess the issue could be either export settings in FCP or settings in the iPhone itself, but I'd have to defer to the FCP experts on this. The video below covers general exporting steps in FCPX—maybe you'll see something in there that helps. I've also linked this thread to the course—hopefully a FCPX guru will be able to provide suggestions or a solution..